2021223243 has 16 divisors (see below), whose sum is σ = 2943150336. Its totient is φ = 1226309280.

The previous prime is 2021223131. The next prime is 2021223277. The reversal of 2021223243 is 3423221202.

It is not a de Polignac number, because 2021223243 - 2¹² = 2021219147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2021223943) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 362205 + ... + 367742.

It is an arithmetic number, because the mean of its divisors is an integer number (183946896).

Almost surely, 2^2021223243 is an apocalyptic number.

2021223243 is a deficient number, since it is larger than the sum of its proper divisors (921927093).

2021223243 is a wasteful number, since it uses less digits than its factorization.

2021223243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 730034.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 2021223243 is about 44958.0164486824. The cubic root of 2021223243 is about 1264.3619800197.

Adding to 2021223243 its reverse (3423221202), we get a palindrome (5444444445).

The spelling of 2021223243 in words is "two billion, twenty-one million, two hundred twenty-three thousand, two hundred forty-three".